What Does the Check Engine Light Mean on My Car?
The check engine light is a warning light that illuminates on your car’s dashboard when the engine control module (ECM) detects a problem with the engine or emissions system. The ECM is a computer that monitors various sensors throughout the engine and emissions system and can detect problems that may not be immediately noticeable to the driver.
When the check engine light comes on, it is important to have your car inspected by a qualified mechanic as soon as possible. Ignoring the check engine light can lead to more serious problems with your car, and can even result in a failed emissions test.
Causes of the Check Engine Light
There are many different things that can cause the check engine light to come on. Some of the most common causes include:
- Loose or damaged gas cap
- Faulty oxygen sensor
- Spark plug or ignition coil failure
- Catalytic converter failure
- Evaporative emissions system leak
- Mass air flow sensor failure
- Throttle position sensor failure
What to Do When the Check Engine Light Comes On
When the check engine light comes on, it is important to have your car inspected by a qualified mechanic as soon as possible. The mechanic will use a diagnostic scanner to read the trouble codes stored in the ECM and determine the cause of the problem.
Once the mechanic has diagnosed the problem, they will recommend the necessary repairs. It is important to have the repairs done as soon as possible to prevent more serious problems with your car.
Ignoring the Check Engine Light
Ignoring the check engine light is a bad idea. Ignoring the light can lead to more serious problems with your car, and can even result in a failed emissions test. If you ignore the check engine light, you risk:
- Damage to the engine or emissions system
- Increased fuel consumption
- Failed emissions test
- Voiding of your car’s warranty
Conclusion
The check engine light is a warning light that should not be ignored. If the check engine light comes on, it is important to have your car inspected by a qualified mechanic as soon as possible. Ignoring the check engine light can lead to more serious problems with your car, and can even result in a failed emissions test.
